Fig. 1
From: Adaptive Aloha anti-collision algorithms for RFID systems
An illustration for RFID link timing, where parameters T 1, T 2, and T 3 denote relevant signal transmission/processing time and waiting time, respectively, CW stands for continuous wave, and the EPC field contains codes storedCRC (16 bits), storedPC (16 bits), EPC, and optional XPC word or words. The command “Query” can be also the command “QueryAdjust”